JIS A 1405-2返回 Back
Test item 测试名称: Acoustics-sound absorption coefficient and impedance in impedance tubes 音量吸收
Sample size 送样规格：4m2
Lead time 测试周期: 常规 Regular 16 working days
Others 其他信息：
Sample for reference 参考图片: 
Sample Report 报告样本：